It really wouldn't make sense for then to retool the lighting system for Switch 2. Ray tracing is the one area where Switch 2 should output above its paper specs, with support for Ray Reconstruction and Ampere being a generation or even two ahead of RDNA 2 even without it. That and the fact that it would take a long time to put together a baked lighting system true to the game, much longer than the September release hints at. We don't see anything like that in the trailer.
I expect the "compromise" is that the game uses DLSS and runs at a pretty low internal resolution.
Also the big bottleneck would probably be the CPU in a title like this, so you'll likely see compromises in dynamic asset density and other CPU heavy areas.
Any game with mandatory ray-tracing should shrink the gap between the Switch 2 and Series S, not increase it.
Edit: Just looked at the trailer again. There is definitely a dynamic lighting system, and it looks like at least raytraced shadows exist. Look at the scene on the bridge. You can see an enemy move and the shadows adjust pretty much as you'd expect in a game with ray traced shadows (albeit at a very low resolution, it looks like.)
Edit 2: You also see what almost certainly are raytraced reflections in that scene. The orange and red lights from the guns reflect off the wet surface dynamically and realistically. You see the orange even on the parts of the bridge that weren't lit before, like near the playable character.
Notice the light reflecting off the storm trooper's shin onto the bridge surface.
vs before being hit.
